MR16及换代灯的LED驱动方案Maxim > App Notes > Display drivers Power-supply circuits Keywords: MR16, LED, driver, dimmable, electronic transformer, 12VAC, lifetime, electrolytic, LM3404, Zetex Aug 04, 2010 APPLICATION NOTE 4708 LED driver solution for MR16 and similar retrofit lamps By: Piero Bianco Abstract: This application note presents an LED driver solution for MR16 and similar retrofit lamps. The circuit drives LEDs from a 12VAC input. The solution works with both magnetic and electronic transformers and is dimmable. It requires no electrolytic capacitors, which extends LED lamp life. Test setup and results are shown. Introduction This application note describes a proprietary solution that will drive LEDs off a 12VAC input for MR16 and similar retrofit lamps. This design can be used with both m……